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8/11/2019 Sizing Conductors, PartXV IMPORTANTE
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A 2012
C . M
310.15(B)(16) N E C (NEC)
2,000 ().
, 310.15(B)(16)
.
,
( ). 30C.
/
30C, / .
, ,
, . O ,
,
.
L
. ,
.
30C
. I 30C /
, (
) , .
; , 125 .
310.15(B)(2); , 310.15(B)(3)()
,
( ).
A , ,
.
8/11/2019 Sizing Conductors, PartXV IMPORTANTE
2/7
310.15,
240.4(A) (G). F , , 4
.
. 68 (A) 51A
.
.
150 .
. A 75C.
35C. HHN ()
?
110.14(C)
. I 215.2(A)(1),
.
,
,
125 . I ,
68A. A 125 ( 1.25),
85A (68 1.25 = 85). N .
136A (85 + 51 = 136).
A HHN 90C,
75C 110.14(C)(1)().
, 75C , 1/0 AG . ,
1/0 AG ( F 1).
N
310.15(B)(3)() . A
310.15(B)(3)()
. A , , ,
125
215.2(A)(1).
125
100
/ . B .
8/11/2019 Sizing Conductors, PartXV IMPORTANTE
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A A 100, , ,
. A ,
.
/
,
: 100 100
. I , 51A,
68A. ,
,
119A (68 + 51 = 119), 136A.
B ,
310.15(B)(5)(). , 4
,
. 310.15(B)(3)()
70 ( 0.70).
35C. C
, 110.14(C).
HHN 90C. A
75C , 90C
. , 310.15(B)(2)()
, 90C , 35C 0.96.
,
. A 119A , 170A
(119 0.70 = 170). A 170A 0.96,
177A (170 0.96 = 177.08 = 177). N 90C
310.15(B)(16) 177A. 90C
310.15(B)(3)() 2/0 AG
( F 2).
B , ,
.
1/0 AG .
8/11/2019 Sizing Conductors, PartXV IMPORTANTE
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310.15(B)(3)() 2/0 AG . ,
()
2/0 AG .
,
. A ,
119A (68 + 51 = 119).
310.15(B)(16).
2/0 AG HHN , 90C , 195A. M
195A 310.15(B)(3)() 70 (195 0.70 =
136.5). N 136.5A 310.15(B)(2)() 0.96
(136.5 0.96 = 131.04 = 131). A
, 131A.
119A, 2/0 AG HHN ( F 3).
N .
, L E ,
. H I G N E C
E E M. H
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8/11/2019 Sizing Conductors, PartXV IMPORTANTE
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I 3 3